Hose-coupling.



H. F. SORUM.

HOSE COUPLING.

APPLICATION FILED OUT. 9, 1913.

1,092,603. Patented Apr. 7, 191i 2 SHEETS-SHEET 1.

m r rmmfbmma COLUMBIA PLANOGRAPH c0, WASHINGTON, D. c.

H. F. SORUM.

HOSE COUPLING. APPLICATION FILED OCT. 9, 1913.

Patented Apr. 7, 1914.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH co. WASHINGTON. D. c.

TTNTTED %TATE% PATENT UFFTQEW HERMAN F. SORUM, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO RICHARD V.

. IPOELMA, OF CHICAGO, ILLINOIS.

HOSE-COUPLING.

Specification of Letters Patent.

Patented Apr. t, 1214i.

To all whom it may concern Be it known that I, HERMAN F. SORUM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Hose-Couplings, of which the following is a full, clear, concise, and eXact description.

My invention relates to detachable hosecouplings and its primary object is to pro vide for making a quick and at the same time secure connection to a fire-plug or other connection.

My invention comprises, generally speaking, a plurality of jaws, preferably three in number, which are pivoted symmetrically about a supporting shell or frame-piece. By means of a cam disk in which the free ends of the levers constituting the jaws ride when the plug is rotated, the working ends or teeth of the jaws are brought together to close upon and grasp the threaded outer surface of the fire-plug; only a moderate rotation of the disk being required for closing the jaws; further rotation brings into ac tion cams carried upon the face of a cam ring which turns with the disk, which face cams engage wit-h splines carried on the in ner or main cylinder of the coupling and force the same endwise toward the fire-plug; a gasket provided upon the end of this cylinder being thereby pressed against the end of the fire-plug.

As will be more fully explained, the construction of my invention is such that the user, having placed the jaws in position, may, by turning the disk only a short distance, cause the jaws to grip the threaded surface of the fire-plug or connection and by continuing this rotating movement in the same direction will complete the union thus accomplishing the double function of gripping the screw-threaded extension of the fire-plug and forming a water-tight union therewith by a single, continuous rotating movement of the disk.

My invention will be more readily understood by reference to the accompanying drawings, in which Figure 1 is a longitudinal, sectional view on line 11 of Fig. 2, showing my coupling in position connected with a fire-plug; Fig. 2 is an end elevation thereof; Fig. 3 is a view as seen from section line 33 of Fig. 1; and Fig. 4 is a detail, perspective view of the ring provided with the face cams, which cams serve to force the central cylinder endwise when the rotation of the ring is continued beyond'the point at which the jaws have completed their clamping action.

Like parts are indicated by similar letters of reference throughout the different views.

In Fig. 1 is shown the fire-plug 1, to which the hose is to be connected. This connection is of the usual construction, being screw-threaded with threads of standard pitch.

My coupling consists of a central cylinder 2 to which the hose proper 3 is attached in the usual way; as shown in this instance by a divided ring 4 clamped about the junction between the hose and the end of the cylinder 2, the end of the cylinder being provided with the annulus 5 into which the hose is compressed by the clasp as shown. The front end of the cylinder 2 is provided with the gasket 6, and also is provided with splines 7 7, 7 with which the cam surfaces of the cam-ring 8 are adapted to engage when the ring is rotated to move the cylinder 2 endwise and thus forces the gasket against the end of the connection 1.

The main frame or shell 9 of my coupling supports the various parts thereof as I will now describe.

The lugs 10, 10, 10, preferably-integral with the shell, as shown, support upon the pivots 11, the jaws 12, 12, 12. The inner ends13, 13, 13 of these jaws project into the cam channels 1%, 14C, 14: respectively of the cam disk 15, which disk 15 is mounted on the casting or support 16; the disk itself being preferably of steel. A split collar 17 is secured to the member 16 as shown to hold the same in place upon the framepiece 9. The cam ring 8, as shown in sec tion in Fig. 1, isheld in place within the casting 16 and about the shell 9 by means of the lugs 18. Said casting 16 is provided with an operating handle 19 and the shell 9 is provided with the carrying handle 20, as most clearly shown in Fig. 2. The faces or working surfaces of the jaws which close upon the threaded end of the projecting threaded water-plug 1 are provided with threads corresponding to the threads of said plug.

It will be observed that the forward end of each of the slots 14 constitutes the cam, there being one for each jaw, while the rear end of each slot constitutes the dwell. With this arrangement a slight rotation of the cam disk closes the jaws as far as they can be closed and the further continued movementof the handle 19 causes the sliding or inner cylinder 2 to move forward within the casing or shell 9, thereby compressing the gasket 6 against the screw-threaded projection of'the connection 1, thus forming a watertight union. This forward sliding movement of the cylinder is caused by means of the cam ring 8, which, as already described, turns with the cam disk 15.. As most clearly shown in Fig. 1, the cam surfaces 21 are of such form that the movement of the cam disk sufliciently to close the jaws does not force the working surfaces 21 against the splines to engage and move the same. After a short and predetermined rotative movement the projecting working portions of said cam surfaces 21 force the splines 7 and with them the inner cylinder 2 toward the fire-plug. It will be observed that the said splines are mounted on the inner or sliding cylinder 2 and project into grooves formed in the stationary frame or shell, which grooves are of such length as to permit this movement to take place; and at the same time said splines prevent the rotation of said sliding cylinder within the frame, The cam surfaces 21 are so formed that there is no forward movement of the sliding or central cylinder 2 until the jaws 45 12 actuated by the cam disk 15 have gripped the screw-threaded extension 1; after which the said cam surfaces become effective and advance the central cylinder to cause the gasket to press against the end of the connection.

It will be understood that my invention as thus described admits of various modifications which would readily suggest themselves to those skilled in the art. In practice I have found that for lightness the shell, the inner cylinder and the supporting piece 16 for the disk cam may be made of aluminum. The jaws or levers 12 may also be made of aluminum. Brass, however, is a suitable material. The various cam surfaces should be made of steel, as is well understood. V

The coupling may be disengaged as readily as it may beengaged, movement by the operating handle 19 in one direction serving to secure the coupling to the connection while movement in the opposite direction readily disengaged the same. i

What I claim is 1. The combination with a plurality of jaws pivoted about a supporting frame, of a disk, provided with channel cams, one for thefree end of each jaw, a central cylinder provided with splines, a cam ring having surface cams adapted to engage with said splines, and grooves in said frame one for eachspline, the said disk cam and ring cam being adapted to rotate together, movement a predetermined distance serving to cause the jaws to perform their gripping operation, while further rotation brings the face cams into action on'the splines to move the central cylinder endwise. v 1

2. The combination with a fire-plug or connection, of a coupling, said coupling comprising a'supporting frame, three gripping jaws mounted thereon, a disk cam'for operating said jaws to close on said plug, a central cylinder, a cam ring adapted to engage with said cylinder to move the sameendwise, the said cam mechanisms being mounted on said frame to rotate together,

the plug by a predetermined rotary movement, further rotation causing the ring cam to actuate the said central cylinder to move the same endwise and close upon the end of said plug to complete the union.

3. The coupling comprising the combination with a'supporting frame of cylindrical form, of a central cylinder having splines, said splines projecting into grooves provided in said frame, levers pivotally mounted about said frame, cams to spread the outer ends of saidlevers to cause the working ends or teeth thereof to approach in the act of gripping, other camsto engage the said splines, after the gripping action has been performed, to move the central cylinder to complete the union. 2

4. The combination with the central cylinder, and gripping jaws, of a supporting frame for the jaws, and cam mechanisms carried on said frame, with rotatable means mounted on said frame for first actuating the gripping jaws, and the rotation being continued to move thesaid cylinder in the act of completing the union. 1

5. The gripping jaws andcams for closing the same, the shell -or frame-piece upon which said jaws are mounted, in combination with the inner ormain sliding-cylinder included'in said frame, a gasket provided upon the end of said cylinder, a supporting piece or casting on which said cams are mounted, a cam ring mounted between said piece and the said frame, said cam ring being provided with face cams, splines provided upon the central cylinder and extendmy name this 27th day of August, A. D. ing into slots or grooves in the supporting 1913. frame, and means for rotating the said cam mechanism whereby the jaws are first oper- HERMAN SORUM ated and immediately thereafter the central Witnesses: cylinder moved endWise. GEORGE P. BARTON,

In Witness whereof, I hereunto subscribe McCLnLLAN YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

